is a sub-kilometer asteroid, classified as a near-Earth object of the Apollo group, approximately in diameter. It was first observed on 18 October 2012, by Pan-STARRS at Haleakala Observatory on the island of Maui, Hawaii, in the United States. The object was removed from the Sentry Risk Table on 29 December 2013. On 8 April 2041 it will pass Earth at a nominal distance of . Due to its presumed small size, it does not qualify as a potentially hazardous asteroid, despite its low Earth MOID.
Orbit and classification
is an Apollo asteroid, which are Earth-crossers and the largest subgroup in the near-Earth object population. It orbits the Sun at a distance of 0.996–1.22 AU once every 14 months (424 days; semi-major axis of 1.11 AU). Its orbit has an eccentricity of 0.10 and an inclination of 10° with respect to the ecliptic. The body's observation arc begins with its official first observation at Haleakala in October 2012.
Close encounters
passed about from Earth on 8 April 1991. On 8 April 2041, the asteroid will pass about from Earth. For comparison, the distance to the Moon is about 0.0026 AU (384,400 km).
It has an exceptionally low minimum orbital intersection distance with Earth of , which translates into 0.36 lunar distances. Despite this exceptionally low theoretical distance, the asteroid is not listed as a potentially hazardous asteroid, due to its small size, represented by its proxy, an absolute magnitude of 23.3, which is below the defined threshold of 22 magnitude.
H < 24 asteroids passing less than 1 LD from EarthAsteroidDateNominal approach distance (LD)Min. distance (LD)Max. distance (LD)Absolute magnitude (H)Size (meters) 1914-12-31 0.606 0.604 0.608 19.4 279–900 1918-09-17 0.911 0.909 0.913 17.9 556–1795 1925-08-30 0.903 0.901 0.905 18.5 443–477 1936-01-06 0.553 0.553 0.553 23.2 48–156 1971-04-11 0.616 0.587 0.651 21.2 122–393 1976-10-17 0.854 0.853 0.855 22.3 73–237 1981-11-04 0.818 0.813 0.823 21.4 111–358 1991-04-08 0.847 0.676 1.027 23.3 46–149 2001-11-08 0.454 0.318 3.436 20.7 153–4942002 MN 2002-06-14 0.312 0.312 0.312 23.6 40–130 2011-11-08 0.845 0.845 0.845 21.9 320–400 2011-12-03 0.904 0.901 0.907 23.2 48–1562018 AH 2018-01-02 0.773 0.772 0.773 22.5 67–216 2018-04-15 0.502 0.501 0.503 23.7 35–135 2028-06-26 0.647 0.647 0.647 18.2 921–94399942 Apophis 2029-04-13 0.0981 0.0963 0.1000 19.7 310–340 2041-04-08 0.283 0.274 0.354 23.3 46–149 2047-06-06 0.789 0.251 38.135 22.4 70–226 2058-09-22 0.918 0.917 0.919 23.8 37–119 2065-05-28 0.865 0.856 0.874 20.7 153–494 2075-11-08 0.592 0.499 0.752 21.9 320–400 2101-01-02 0.621 0.615 0.628 21.0 133–431 2129-10-19 0.239 0.155 0.381 22.7 61–197101955 Bennu 2135-09-25 0.780 0.308 1.406 20.19 472–512 2140-12-01 0.634 0.631 0.637 19.3 427–593 2146-03-23 0.896 0.744 1.288 22.8 58–188 2148-01-22 0.771 0.770 0.771 21.1 127–411 2156-02-13 0.685 0.652 6.856 22.9 56–179 2156-12-16 0.998 0.955 1.215 21.6 101–327
Numbering and naming
This minor planet has not been numbered by the Minor Planet Center and remains unnamed.
Physical characteristics
Based on a generic magnitude-to-diameter conversion, measures 66 meters in diameter, for an absolute magnitude of 23.3 and an assumed albedo of 0.20, which is typical for stony S-type asteroids. In the unusual case of being a carbonaceous asteroid with a low albedo of 0.05, may be as large as 130 meters in diameter.
References
External links MPEC 2012-U61 : 2012 UE34, Minor Planet Electronic Circular, 20 October 2012 MPEC 2019-N158 : 2012 UE34, Minor Planet Electronic Circular, 14 July 2019 , includes discussion of at NEODyS-2 Physical facts sheet, European Asteroid Research Node (EARN), 18 October 2012 List Of The Potentially Hazardous Asteroids (PHAs), Minor Planet Center